SB2022112804 - Multiple vulnerabilities in Nextcloud user_oidc

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Main Vulnerability Database SB2022112804

SB2022112804 - Multiple vulnerabilities in Nextcloud user_oidc

Published: November 28, 2022

Security Bulletin ID SB2022112804
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Stored cross-site scripting (CVE-ID: CVE-2022-39338)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear


The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in the Authorization Endpoint. A remote user can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.


2) Cleartext transmission of sensitive information (CVE-ID: CVE-2022-39339)

CWE-ID: CWE-319 - Cleartext Transmission of Sensitive Information

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote user to gain access to sensitive information.

The vulnerability exists due to software uses insecure communication channel to transmit sensitive information. A remote administrator can gain access to sensitive data.


Remediation

Install update from vendor's website.

References